X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/418bfdefc990711913564d0bb4c58a1dd9d78c30..f06041cf2c450457a0b47a49b66b19cb9133c18e:/examples/msg/io/storage.c

diff --git a/examples/msg/io/storage.c b/examples/msg/io/storage.c
index 9f2a266758..579f0611bd 100644
--- a/examples/msg/io/storage.c
+++ b/examples/msg/io/storage.c
@@ -4,6 +4,11 @@
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
+/** @addtogroup MSG_examples
+ * 
+ * - <b>io/storage.c</b> demo of all main storage and file functions
+ */
+
 /********************* Files and Storage handling ****************************
  * This example implements all main storage and file functions of the MSG API
  *
@@ -18,7 +23,7 @@
  *
 ******************************************************************************/
 
-#include "msg/msg.h"
+#include "simgrid/msg.h"
 #include "xbt/log.h"
 #include "xbt/dict.h"
 
@@ -33,7 +38,7 @@ static int host(int argc, char *argv[]){
   xbt_dict_cursor_t cursor = NULL;
   char* mount_name;
   char* storage_name;
-  msg_storage_t storage;
+  msg_storage_t storage = NULL;
 
   // Retrieve all mount points of current host
   xbt_dict_t storage_list = MSG_host_get_mounted_storage_list(MSG_host_self());
@@ -44,8 +49,8 @@ static int host(int argc, char *argv[]){
     storage = MSG_storage_get_by_name(storage_name);
 
     // Retrieve disk's information
-    sg_size_t free_size = MSG_storage_get_free_size(mount_name);
-    sg_size_t used_size = MSG_storage_get_used_size(mount_name);
+    sg_size_t free_size = MSG_storage_get_free_size(storage);
+    sg_size_t used_size = MSG_storage_get_used_size(storage);
     sg_size_t size = MSG_storage_get_size(storage);
 
     XBT_INFO("Total size: %llu bytes", size);
@@ -56,25 +61,24 @@ static int host(int argc, char *argv[]){
 
 
   // Create a 200,000 bytes file named './tmp/data.txt' on /sd1
-
-  char* mount = xbt_strdup("/home");
-  char* file_name = xbt_strdup("./tmp/data.txt");
+  char* file_name = xbt_strdup("/home/tmp/data.txt");
   msg_file_t file = NULL;
   sg_size_t write, read, file_size;
 
   // Open an non-existing file amounts to create it!
-  file = MSG_file_open(mount, file_name, NULL);
+  file = MSG_file_open(file_name, NULL);
   write = MSG_file_write(file, 200000);  // Write 200,000 bytes
   XBT_INFO("Create a %llu bytes file named '%s' on /sd1", write, file_name);
   MSG_file_dump(file);
 
   // check that sizes have changed
-  XBT_INFO("Free size: %llu bytes", MSG_storage_get_free_size("/home"));
-  XBT_INFO("Used size: %llu bytes", MSG_storage_get_used_size("/home"));
+  XBT_INFO("Free size: %llu bytes", MSG_storage_get_free_size(storage));
+  XBT_INFO("Used size: %llu bytes", MSG_storage_get_used_size(storage));
 
 
   // Now retrieve the size of created file and read it completely
   file_size = MSG_file_get_size(file);
+  MSG_file_seek(file, 0, SEEK_SET);
   read = MSG_file_read(file, file_size);
   XBT_INFO("Read %llu bytes on %s", read, file_name);
 
@@ -83,23 +87,28 @@ static int host(int argc, char *argv[]){
   XBT_INFO("Write %llu bytes on %s", write, file_name);
   MSG_file_dump(file);
 
-  MSG_file_close(file);
-  free(mount);
-  free(file_name);
-
   storage_name = xbt_strdup("Disk4");
   storage = MSG_storage_get_by_name(storage_name);
 
   // Now rename file from ./tmp/data.txt to ./tmp/simgrid.readme
-  XBT_INFO("*** Renaming './tmp/data.txt' into './tmp/simgrid.readme'");
-  MSG_storage_file_rename(storage, "./tmp/data.txt", "./tmp/simgrid.readme");
+  XBT_INFO("*** Move '/tmp/data.txt' into '/tmp/simgrid.readme'");
+  MSG_file_move(file, "/home/tmp/simgrid.readme");
+
+  // Attach some user data to the file
+  MSG_file_set_data(file, xbt_strdup("777"));
+  // Retrieve these data
+  char *data = MSG_file_get_data(file);
+  XBT_INFO("User data attached to the file: %s", data);
+
+  MSG_file_close(file);
+  free(file_name);
 
   // Now attach some user data to disk1
   XBT_INFO("*** Get/set data for storage element: %s ***",storage_name);
 
-  char *data = MSG_storage_get_data(storage);
+  data = MSG_storage_get_data(storage);
 
-  XBT_INFO("Get data: '%s'", data);
+  XBT_INFO("Get storage data: '%s'", data);
 
   MSG_storage_set_data(storage, xbt_strdup("Some user data"));
   data = MSG_storage_get_data(storage);